Jimi Jamison, lead singer of beloved eighties bands Cobra and Survivor reportedly died of a heart attack on Sunday night. He was 63-years-old.

According to a report by TMZ, Jamison’s booking manager confirmed that the former frontman has died. Following the dissolution of Cobra, Jamison joined Survivor in 1984 after the band’s original frontman Dave Bickler, the voice on Eye of the Tiger, left after developing polyps on his vocal chords.

Jamison served as the Survivor frontman until 1988 and is known for such 1980s hits as The Moment of Truth from The Karate Kid soundtrack, Burning Heart from Rocky IV, High on You, The Search Is Over and Is This Love?.

As a solo artist, is he also known for the track I’m Always Here, which became the Baywatch theme song. Reports Mashable, his parody of Eye of the Tiger for a Starbucks commercial in 2004 earned him an Emmy nomination.

According to Rolling Stone, after he left the band in 1988, he continued to tour under the Survivor name and was subsequently embroiled in legal battles with his former bandmates who were also touring, having reunited with Bickler. They settled things by the end of the decade and Jamison rejoined Survivor in 2000 for another six years.